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Finding the Fourth Proportional to 52,808.40, 79,129.26 and 19,482.60

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Solution

The fourth proportional to 52,808.40, 79,129.26 and 19,482.60 is: 29,193.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,808.40 : 79,129.26 = 19,482.60 : x
  2. Step 2: Convert to fraction form
    52,808.40/79,129.26 = 19,482.60/x
  3. Step 3: Cross multiply
    52,808.40x = 79,129.26 × 19,482.60
  4. Step 4: Simplify right side
    52,808.40x = 1,541,643,720.88
  5. Step 5: Solve for x
    x = 1,541,643,720.88/52,808.40
  6. Step 6: Final answer
    x = 29,193.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.